A phishing attack is a computer based social engineering, where an attacker crafts an email that appears legitimate. Such email have the same look and feel as those received
from the original site, but they might contain links to fake websites. If you are not smart, then you will type your user ID and password and will try to login which will result in failure and by that time, the attacker will have your ID and password to attack your original account.
So, this is the Gmail Phishing Attack by which attacker easily access your Gmail account. So, in future be careful for these type email’s. You can not log in useless website.
Or best way to avoid this type of email is that you make a dummy email which is only for testing and make another personal email account in which you store your personal data and can not log in anywhere with personal e mail.